How does solar pencil out?
Efficiency of solar equipment has risen sharply and prices have dropped. At the same time, local electricity rates are expected to rise at a rate of 2.2%/year. This takes much of the risk out of solar conversion and creates a high-tech win-win:
Scenario for a 4.2 kWh, $8.50 per watt system:
- 35,000
- 0
- -10,500
- less $825.- 2,970. - 825
- 440
- 23,235
- Estimated net cost of installation, Year 1: $21,090 - 23,235
- Estimated net cost, Year 7: 0 (ROI: 35%)
- Estimated net cost, Year 10: -12,437 (that's a "negative" $12,437)